package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class LoginDemo1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名");
        String username = scanner.nextLine();
        System.out.println("请输入密码");
        String password = scanner.nextLine();
        try ( Connection connection=DBUtil.getConnection()){
           String sql="SELECT *FROM user " +
                   "WHERE username=? " +
                   "AND password=?";
           PreparedStatement ps=connection.prepareStatement(sql);
           ps.setString(1,username);
           ps.setString(2,password);
           ResultSet rs=ps.executeQuery();
           if (rs.next()){
               System.out.println("登录成功");
           }else {
               System.out.println("登录失败");
           }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
